Although mRNA vaccines saved millions of lives during the COVID-19 pandemic, U.S. Health Secretary Robert F. Kennedy Jr. incorrectly argued they are ineffective to justify the Department of Health and Human Service's recent decision to cancel $500 million in government-funded research projects to develop new vaccines using the technology.

This includes terminating awards and contracts with pharmaceutical companies and universities and canceling 22 investment projects worth nearly $500 million. While some final-stage contracts will be allowed to be completed, no new mRNA-based projects will be initiated, the HHS said.